Convert special characters to HTML entities and decode them back. Supports named and numeric entities.
| Character | Entity | Numeric | Description |
|---|---|---|---|
| & | & | & | Ampersand |
| < | < | < | Less than |
| > | > | > | Greater than |
| " | " | " | Double quote |
| ' | ' | ' | Single quote |
|   | Non-breaking space | |
| © | © | © | Copyright |
| ® | ® | ® | Registered |
| ™ | ™ | ™ | Trademark |